can we produce black light ..... if not why...?

Answer 1

Roughly, light is like a wave you might see in the ocean except it's a bit different. An ocean wave is energy in a mechanical form(in the form of motion here) that is travelling through water. A light wave is energy travelling but in an electromagnetic field. It's not quite right but you can think of it as an ocean wave travelling through an ocean of electromagnetic field instead of water as a rough approximation.

Just like waves in water can be short or long, electromagnetic waves can also be short or long. Why do you care? because you can see some electromagnetic waves that have a range of lengths (about 400 to 700 nanometers is the range).

Your eye can tell the difference between shorter and longer waves and the experience in your brain is different based on the length. How is it different? because the color you see is different. Shorter wavelengths are violet and blue, longer ones are red and other colors are in between.

There's something else too. What happens if you open your eyes are in a room with NO electromagnetic waves of any kind? you will see blackness. Blackness is how your brain interprets the reception of no visible light on your eyes. So when you see blackness it means that there is no visible light coming from that direction (there could be some that has a wavelength that is too short or long but your eye cannot see that).

It comes down to the fact that blackness is what you see in the absence of visible light so you can't make black light because blackness is not something associated with a type of light. So if you want to say you can make black light then bring your friends into a room and tell them to look closely at a "special" bulb and then turn it off.

Answer 2

Light is black if it contains no energy within the human visible spectrum. Since humans see only a very small range of the electromagnetic spectrum, most light is black.

The term 'black light' is commonly used for light with high ultraviolet content. It's used for cool luminescence effects at haunted houses, but generally isn't pure ultraviolet.

Yes, we can produce light at a wide range of frequencies, including black light by either definition.

Answer 3

you does no longer be waiting to work out it. hues are seen while an merchandise absorbs each and every of the seen spectrum of light save for a particular wave length, that's contemplated decrease back and seen as a particular shade. as an occasion, a pink merchandise displays purely the pink wavelength of light. the colour black happens while an merchandise absorbs each and every of the seen spectrum of light, reflecting no shade in any respect. while it incredibly is utilized to easy itself, the excuses are sparkling. once you spot colored easy, the sunshine is interior the wavelength of that shade. For it to be relatively black, it may could desire to be in a wavelength outdoors the seen easy spectrum and hence could be imperceivable to the human eye. on the different hand, there are "black lights" that are certainly ultraviolet lights. those transmit ultraviolet easy and area of the violet end of the spectrum. because of the fact the colour violet could properly be seen, it can't relatively be black.

Answer 4

Black light (also Wood's light) is the common name for a lamp emitting electromagnetic radiation that is almost exclusively in the soft near ultraviolet range, and very little visible light.

We can, and do, produce it.

For more on black light and sources see:
http://en.wikipedia.org/wiki/Black_light

Hope this helps!

Answer 5

light in wide meaning is the medium with the help of, we can see the things ,light is an electromagnetic radiation . it means such a radiations to which our eyes are sensitive or such a radiation with the help of , we can see the things is called light,but black means absence of light,and in absence of light we can't see anything . so all other radiations which doesnot make our eyes to see the things are black light .

Answer 6

No... there is no wavelength in the electromagnetic spectrum associates with black. Ie black is the absence of light.

Answer 7

light is an electro magnetic radiation it has no colours of its own
light (visible) is normally white and hence we can see the reflection of colours if we see a colured light it is due to the property of that particular wave length
black colour isa very good absorber and agood emitter but a poor reflector as we see only the reflections we cannot see black light

Answer 8

no, i dont think so